In a jift.. Susima tried to kill Asoka wife, but due to some confusion. his people killed ashoka's mother. This provoked ashoka and he not only killed susima, but also all his half brothers and then he ruled.. he was a cruel ruler who wanted to spread mauryan dynasty. but the kalinga war turned his life upside down and he followed budhism 9 in which his wife believed) and he sent his own kids to different parts of the country to spread budhism..